diff --git a/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php b/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php
index cabd801af8..752a3d066f 100644
--- a/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php
+++ b/src/Symfony/Component/Form/Extension/DataCollector/FormDataCollector.php
@@ -139,7 +139,9 @@ class FormDataCollector extends DataCollector implements FormDataCollectorInterf
         $hash = spl_object_hash($form);
 
         if (!isset($this->dataByForm[$hash])) {
-            $this->dataByForm[$hash] = array();
+            // field was created by form event
+            $this->collectConfiguration($form);
+            $this->collectDefaultData($form);
         }
 
         $this->dataByForm[$hash] = array_replace(